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PROBLEMS OF GEOCOSMOS

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Proceedings of the 7th International Conference "Problems of Geocosmos" (St. Petersburg, Russia, 26-30 May 2008)<br />

We compute topological invariants both for original and inverted magnetograms and for original and inverted<br />

image of Holder maps. As a result we get four couple of such numbers. So, for active region which was<br />

observed during five days we obtain time series of Betti numbers with near 80 values.<br />

Results<br />

For exploration of the original magnetogram it was decided to investigate difference of corresponding Betti<br />

numbers for positive and negative images. We found out the distinction in variation of such difference for Xflare<br />

active region and flare-quiet active region. For flare quiet regions the differences oscillates near zero, but<br />

for flare active regions Betti differences were strongly above or under the zero level (Figure 6). From<br />

physical point of view such behavior signals that during the activity in region there is a prevalence of one<br />

polarity before another.<br />

p n<br />

-β0<br />

β 0<br />

p n<br />

-βi ; i=0,1<br />

β i<br />

700<br />

600<br />

500<br />

400<br />

300<br />

200<br />

100<br />

1500<br />

1000<br />

500<br />

0<br />

-500<br />

0 10 20 30 40 50 60 70 80<br />

# fits<br />

flare-quiet active region<br />

-1000<br />

0 10 20 30 40<br />

Figure 5<br />

For given image digital piece β 0 =1, β 1=1.<br />

Cycle I and J are<br />

homologous. Cycle K retracts to point<br />

# fits<br />

X-flare active region<br />

p n<br />

-β1<br />

β 1<br />

500<br />

0<br />

-500<br />

-1000<br />

-1500<br />

-2000<br />

-2500<br />

0 10 20 30 40 50 60 70 80 90<br />

# fits<br />

p n<br />

β -β0<br />

0<br />

p n<br />

β Figure 6<br />

-β1<br />

1<br />

We find out the distinction in variation of<br />

such differences for X-flare active region and<br />

flare-quiet active region. The difference<br />

oscillates near zero or in the various half<br />

planes<br />

343

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